CN110689831A - Display panel, brightness compensation method thereof and display device - Google Patents
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The application provides a display panel, a brightness compensation method thereof and a display device. The display panel comprises a plurality of pixels which are arranged according to an array, each pixel comprises a light-emitting structure, the display panel further comprises a light detection component and an adjusting module, the light detection component is arranged below the light-emitting structure and comprises a plurality of photosensitive capacitor units, each photosensitive capacitor unit corresponds to one pixel, and the photosensitive capacitor units are used for detecting the brightness of the pixels and converting the detected brightness of the pixels into voltage signals to be output, so that the adjusting module adjusts the light-emitting structure of the pixels to emit light according to the voltage signals. The display device includes the display panel. The brightness compensation method is used for adjusting the brightness of the display panel. The method and the device can simply, effectively and quickly detect the pixels with the Mura and effectively compensate the pixels with the Mura.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a brightness compensation method thereof, and a display device.
Background
In the production process of the OLED flat display panel, due to the production process and the like, TFTs at different positions often have non-uniformity in electrical parameters such as threshold voltage, mobility and the like, and the non-uniformity is converted into current difference and brightness difference of the OLED display device and is perceived by human eyes, i.e., Mura phenomenon.
In the prior art, the occurrence probability of the Mura phenomenon can be reduced by methods of improving the process level or improving the purity of raw materials and the like; however, the physical characteristics of the manufactured display panel are already fixed, and the Mura phenomenon can be improved only by a method (De-Mura) of correspondingly compensating image data signals input into different regions of the display panel, so that the output picture has smoothness, and the viewing experience of a user is improved.
Normally, the Mura data is obtained by optical extraction, i.e. brightness signal is extracted by optical CCD photography after the back plate is lighted. As shown in fig. 1, the flowchart in fig. 1 is a flowchart for eliminating Mura in a general optical extraction manner, and includes the following steps:
step 101': the driving module lights up the panel and displays an input picture (generally a gray scale or RGB);
step 102': shooting the picture by using a CCD camera with high resolution and high precision;
step 103': analyzing pixel extension distribution characteristics according to camera acquisition data, and identifying Mura according to a related algorithm;
step 104': generating De-Mura data according to the Mura data and a corresponding De-Mura compensation algorithm;
step 105': and burning the De-Mura data into a Flash ROM, and confirming that Mura is eliminated from the compensated picture shot from childhood.
The difficulty of this technology is how to accurately and quickly grasp the correct brightness of each pixel and establish a correct model by using a CCD, and since optical compensation needs specialized equipment, only initial calibration can be performed before shipment, and compensation such as compensation for OLED aging cannot be performed in product use.
When the De-Mura technique is applied in actual production, the requirements for good display effect and short time consumption are required, and how to quickly and accurately acquire the Mura data and correspondingly compensate the image data signals is a difficult problem to be solved in the field.
Disclosure of Invention
The application provides a display panel, a brightness compensation method thereof and a display device, which can simply, effectively and quickly detect the pixels with Mura and effectively compensate the pixels with Mura.
According to a first aspect of the embodiments of the present application, a display panel is provided, where the display panel includes a plurality of pixels arranged in an array, each pixel includes a light emitting structure, the display panel further includes a light detecting component and an adjusting module, the light detecting component is disposed below the light emitting structure, the adjusting module is connected to the light detecting component and the light emitting structure, the light detecting component includes a plurality of photosensitive capacitor units, each photosensitive capacitor unit corresponds to one of the pixel settings, and the photosensitive capacitor units are configured to detect luminance of the pixels and convert the detected luminance of the pixels into a voltage signal to be output, so that the adjusting module adjusts light emission of the light emitting structure of the pixels according to the voltage signal.
Optionally, the light detection component includes a first electrode layer, a photosensitive material layer, and a second point electrode layer that are sequentially stacked.
Optionally, the first electrode layer is an X-axis electrode layer; the second point electrode layer is a Y-axis electrode layer; or, the first electrode layer is a Y-axis electrode layer, and the second electrode layer is an X-axis electrode layer.
Optionally, the adjusting module includes a brightness identifying module, an image processing module, and a driving module;
the brightness identification module is connected with each photosensitive capacitor unit and used for reading a voltage signal of each photosensitive capacitor unit, identifying a target pixel with Mura according to the voltage signal and sending the voltage signal of the target pixel to the image processing module;
the image processing module is connected with the brightness identification module and the driving module, and is used for receiving the voltage signal of the target pixel sent by the brightness identification module and the voltage signal of each pixel sent by the outside, calculating a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel, and sending the calibration voltage to the driving module;
the driving module is connected with the image processing module and the light-emitting structure, and is used for receiving the calibration voltage and driving the light-emitting structure to emit light according to the calibration voltage.
According to a second aspect of embodiments of the present application, there is provided a display device. The display device includes the display panel as described above.
According to a third aspect of embodiments of the present application, there is provided a luminance compensation method of a display panel, the luminance compensation method being applied to the display panel as described above, the luminance compensation method including:
detecting the brightness of each pixel in the display panel, and converting the detected brightness of the pixel into a voltage signal through the photosensitive capacitor unit for outputting;
and adjusting the light emission of the light emitting structure of the pixel according to the voltage signal.
Optionally, in the adjusting of the light emission of the light emitting structure of the pixel according to the voltage signal, the brightness compensation method includes:
reading a voltage signal of each photosensitive capacitor unit, and identifying a target pixel with Mura according to the voltage signal;
calculating a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel sent from the outside;
adjusting the light emission of the light emitting structure according to the calibration voltage.
Optionally, in reading a voltage signal of each photosensitive capacitor unit and identifying a target pixel with Mura according to the voltage signal, the brightness compensation method includes:
and marking the same voltage signals exceeding 80% in all the voltage signals as standard voltages, and identifying the pixels corresponding to the voltage signals different from the standard voltages as target pixels with Mura.
Optionally, in calculating the calibration voltage according to the voltage signal of the target pixel and an externally transmitted voltage signal of each pixel, the brightness compensation method includes:
calculating the compensation voltage of the target pixel according to the standard voltage;
and adjusting the voltage signal of the target pixel sent from the outside according to the compensation voltage to obtain the calibration voltage.
In the display panel, the brightness compensation method thereof and the display device of the embodiment, each photosensitive capacitor unit is arranged corresponding to a pixel, and the photosensitive capacitor unit is used for detecting the brightness of the pixel and converting the detected brightness of the pixel into a voltage signal to be output, so that the pixel with the Mura is simply, effectively and quickly detected, and the pixel with the Mura is effectively compensated. The Mura data can be accurately acquired through the photosensitive capacitor unit, the defect that the conventional optical extraction type complicated data acquisition process can be avoided, the initialization calibration can only be carried out before the factory leaves the factory, the compensation can not be carried out in the product use process, the pixel with the Mura can be continuously compensated in the product use process, and the service life of the product is effectively prolonged.
Drawings
Fig. 1 is a flow chart of the prior art common optical extraction method for eliminating Mura.
Fig. 2 is a schematic cross-sectional view of a display panel according to an exemplary embodiment of the present application.
Fig. 3 is a block diagram of a display panel according to an exemplary embodiment of the present application.
Fig. 4 is a schematic top view of a light detecting component of a display panel according to an exemplary embodiment of the present application.
Fig. 5 is a schematic partial cross-sectional view of a display device according to an exemplary embodiment of the present application.
Fig. 6 is a flowchart of a brightness compensation method of a display panel according to an exemplary embodiment of the present application.
Description of the reference numerals
Display panel 1
Cathode 123
Light detecting member 13
Second dot electrode layer 134
Adjusting module 15
First back film 21
Double-sided adhesive tape 22
Thermal shock absorbing film 23
Optical adhesive film 27
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "plurality" includes two, and is equivalent to at least two. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
As will be understood with reference to fig. 2 and 3, the present embodiment provides a display panel 1. The display panel 1 includes a plurality of pixels 11 arranged in an array, each pixel 11 includes a light emitting structure 12, the display panel 1 further includes a light detecting component 13 and an adjusting module 15, the light detecting component 13 is disposed below the light emitting structure 12, and the adjusting module 15 is connected to the light detecting component 13 and the light emitting structure 12. As shown in fig. 2, the light detecting member 13 can detect the light L emitted from the light emitting structure 12; the arrow direction D is the display direction of the display panel 1.
The light detection component 13 includes a plurality of photosensitive capacitor units 131, each photosensitive capacitor unit 131 is disposed corresponding to a pixel 11, and the photosensitive capacitor units 131 are configured to detect the brightness of the pixel 11 and convert the detected brightness of the pixel 11 into a voltage signal for outputting, so that the adjusting module 15 adjusts the light emitting structure 12 to emit light according to the voltage signal. That is to say, the brightness of the pixel 11 is detected by the photosensitive capacitor unit 131, and the detected brightness of the pixel 11 is converted into a voltage signal to be output, so that a voltage signal corresponding to the instant brightness of each pixel 11 can be quickly and accurately captured, and then the adjustment module 15 determines according to the voltage signal of each pixel 11, and correspondingly adjusts the light emission of the light emitting structure 12, so as to compensate the pixel 11 with Mura, and further eliminate the Mura phenomenon; compared with the complicated data acquisition process of a common optical extraction type in the prior art, the display panel 1 of the embodiment can simply, effectively and quickly detect the pixels 11 with Mura, effectively compensate the pixels 11 with Mura, continuously compensate the pixels 11 with Mura in the product using process, and effectively prolong the service life of the product.
In the present embodiment, the light emitting structure 12 includes an anode 121, a light emitting layer 122, and a cathode 123 stacked from bottom to top, and the cathode 123 is light permeable. A flexible substrate 14 is also provided beneath the light emitting structure 12.
The photodetection unit 13 includes a first electrode layer 132, a photosensitive material layer 133, and a second dot electrode layer 134, which are stacked in this order from bottom to top. The first electrode layer 132 is an X-axis electrode layer; the second dot electrode layer 134 is a Y-axis electrode layer; alternatively, the first electrode layer 132 is a Y-axis electrode layer, and the second dot electrode layer 134 is an X-axis electrode layer. The sensing of the brightness of the corresponding pixel 11 by the photosensitive material layer 133 and the voltage conversion relationship are related to the prior art.
The adjusting module 15 includes a brightness recognition module 151, an image processing module 152, and a driving module 153. The image processing module 152 may be a large scale integrated circuit.
The brightness recognition module 151 is connected to each of the photosensitive capacitor units 131, and the brightness recognition module 151 is configured to read a voltage signal of each of the photosensitive capacitor units 131, recognize a target pixel 11 with Mura according to the voltage signal, and send the voltage signal of the target pixel 11 to the image processing module 152.
The image processing module 152 is connected to the brightness recognition module 151 and the driving module 153, and the image processing module 152 is configured to receive the voltage signal of the target pixel sent by the brightness recognition module 151 and the voltage signal of each pixel 11 sent from the outside, calculate a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel 11, and send the calibration voltage to the driving module 153. The voltage signal of each pixel 11 sent from the outside is a voltage signal corresponding to the content that needs to be displayed by each pixel 11 in the display panel 1.
The driving module 153 is connected to the image processing module 152 and the light emitting structure 12, and the driving module 153 is configured to receive the calibration voltage and drive the light emitting structure 12 to emit light according to the calibration voltage.
As shown in fig. 4, the X-axis electrode layer includes a plurality of horizontal X-axis electrodes, the Y-axis electrode layer includes a plurality of vertical Y-axis electrodes, and photosensitive material is interposed between the horizontal X-axis electrodes and the vertical Y-axis electrodes at intersections of the two electrodes to form photosensitive capacitor units. Each photosensitive capacitor unit corresponds to one pixel point. The scanning mode is to scan the capacitance value at each intersection, and determine the position of the pixel with Mura and the compensation value through calculation. As shown in fig. 4, the scanning order is: the driving module applies a driving signal to Y1, and the brightness recognition module 151 collects charges on the sensing electrodes (X1, X2, X3, and X4) in sequence; the driving module applies a driving signal to Y2, and the brightness recognition module collects charges on the sensing electrodes (X1, X2, X3 and X4) in sequence; the driving module applies a driving signal to Y3, and the brightness recognition module collects charges on the sensing electrodes (X1, X2, X3 and X4) in sequence; the driving module applies a driving signal to Y4, and the brightness recognition module collects charges on the sensing electrodes (X1, X2, X3 and X4) in sequence; and by analogy, scanning X × Y intersections in total, and identifying the positions of the pixels with Mura by different collected charges according to different brightness of corresponding pixels, wherein the brightness identification module collects the signals to determine the positions of the pixels with Mura, and determines the voltages to be compensated at the positions through the image processing module.
As will be understood in conjunction with fig. 5, the present embodiment further provides a display device 2. The display device 2 includes the display panel 1 as above. The display panel 1 includes a display substrate 25 and a conditioning module.
The display device 2 comprises a first back film 21, a double-sided tape 22, a heat dissipation and shock absorption film 23, a second back film 24, a display substrate 25, a polarizer 26, an optical film 27 and a cover plate 28 which are stacked from bottom to top. The display substrate 25 is provided with a light emitting structure and a light detecting member of the pixel. The brightness recognition module 151 and the driving module 153 are disposed below the first back film 21, the brightness recognition module 151 is connected to the light detecting member, and the driving module 153 is connected to the light emitting structure.
Based on the same inventive concept, an embodiment of the present application provides a brightness compensation method of a display panel, as shown in fig. 6, the brightness compensation method includes:
step 100: detecting the brightness of each pixel in the display panel, and converting the detected brightness of the pixel into a voltage signal through the photosensitive capacitor unit for outputting;
step 200: and adjusting the light emission of the light emitting structure of the pixel according to the voltage signal.
In step 100, the photosensitive capacitor unit is configured to detect the brightness of the pixel, and convert the detected brightness of the pixel into a voltage signal for output. The photosensitive capacitor unit detects the brightness of the corresponding pixel through the photosensitive material layer, and converts the detected brightness of the pixel into voltage output.
In step 200, the brightness compensation method includes:
step 210: reading a voltage signal of each photosensitive capacitor unit, and identifying a target pixel with Mura according to the voltage signal;
step 220: calculating a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel sent from the outside;
step 230: and adjusting the light emission of the light emitting structure of the pixel according to the calibration voltage.
In step 210, the brightness compensation method includes marking the same voltage exceeding 80% of all the voltage signals as a standard voltage, and identifying a pixel corresponding to a voltage signal different from the standard voltage as a target pixel with Mura.
In step 220, the brightness compensation method includes:
step 221: calculating the compensation voltage of the target pixel according to the standard voltage;
step 222: and adjusting the voltage signal of the target pixel sent from the outside according to the compensation voltage to obtain the calibration voltage.
In order to capture the brightness of each pixel more accurately, the driving module initially drives each pixel to display the same color, i.e., the picture of the display panel initially lighted by the driving module is a pure color picture.
The following is a practical example to illustrate the brightness compensation method of the display panel. The driving module initially drives each pixel to display the same color, each photosensitive capacitor unit correspondingly detects the brightness of the corresponding pixel, the detected brightness of the pixels is converted into voltage signals to be output, the voltage signals of 90% of the pixels in the display panel are 7V, the voltage signals of 10% of the pixels are 6V, the voltage signals are sent to the image processing module, the image processing module receives the voltage signals, judges that 7V is standard voltage, identifies the pixels with the voltage signals of 6V as target pixels with Mura, and calculates the compensation voltage of the target pixels to be 1V according to the standard voltage; after the image processing module obtains a voltage signal of each pixel sent by the outside in the next step, the compensation voltage is added for the target pixel to obtain the calibration voltage of the target pixel, the calibration voltage of the target pixel is sent to the driving module, the driving module drives the light-emitting structure of the target pixel to emit light according to the calibration voltage, and therefore in the next step of display, the display brightness of the target pixel is adjusted through the calibration voltage, and the effect of enabling the display of the whole panel to be more uniform is achieved. And repeating the steps of the whole brightness compensation method until the target pixel with Mura is completely eliminated.
In addition, the pixels can be aged in the using process, so that new Mura is generated, the steps can be carried out when the computer is started at each time, the newly generated Mura data is compensated, and the service life of a product can be effectively prolonged.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (9)
1. The display panel is characterized by further comprising a light detection component and an adjusting module, wherein the light detection component is arranged below the light emitting structure, the adjusting module is connected with the light detection component and the light emitting structure, the light detection component comprises a plurality of photosensitive capacitor units, each photosensitive capacitor unit corresponds to one pixel, and the photosensitive capacitor units are used for detecting the brightness of the pixels and converting the detected brightness of the pixels into voltage signals to be output, so that the adjusting module adjusts the light emitting structure of the pixels to emit light according to the voltage signals.
2. The display panel according to claim 1, wherein the light detection member includes a first electrode layer, a photosensitive material layer, and a second dot electrode layer which are sequentially stacked.
3. The display panel according to claim 2, wherein the first electrode layer is an X-axis electrode layer; the second point electrode layer is a Y-axis electrode layer; or, the first electrode layer is a Y-axis electrode layer, and the second electrode layer is an X-axis electrode layer.
4. The display panel of claim 1, wherein the adjusting module comprises a brightness recognition module, an image processing module, a driving module;
the brightness identification module is connected with each photosensitive capacitor unit and used for reading a voltage signal of each photosensitive capacitor unit, identifying a target pixel with Mura according to the voltage signal and sending the voltage signal of the target pixel to the image processing module;
the image processing module is connected with the brightness identification module and the driving module, and is used for receiving the voltage signal of the target pixel sent by the brightness identification module and the voltage signal of each pixel sent by the outside, calculating a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel, and sending the calibration voltage to the driving module;
the driving module is connected with the image processing module and the light-emitting structure, and is used for receiving the calibration voltage and driving the light-emitting structure to emit light according to the calibration voltage.
5. A display device characterized in that it comprises a display panel as claimed in any one of claims 1 to 4.
6. A luminance compensation method of a display panel, wherein the luminance compensation method is applied to the display panel as set forth in claim 1, the luminance compensation method comprising:
detecting the brightness of each pixel in the display panel, and converting the detected brightness of the pixel into a voltage signal through the photosensitive capacitor unit for outputting;
and adjusting the light emission of the light emitting structure of the pixel according to the voltage signal.
7. The luminance compensation method of a display panel according to claim 6, wherein in the adjusting of the light emission of the light emitting structure of the pixel according to the voltage signal, the luminance compensation method comprises:
reading a voltage signal of each photosensitive capacitor unit, and identifying a target pixel with Mura according to the voltage signal;
calculating a calibration voltage according to the voltage signal of the target pixel and the voltage signal of each pixel sent from the outside;
adjusting the light emission of the light emitting structure according to the calibration voltage.
8. The method of claim 7, wherein in reading the voltage signal of each of the photosensitive capacitor units and identifying the target pixel with Mura according to the voltage signal, the method comprises:
and marking the same voltage signals exceeding 80% in all the voltage signals as standard voltages, and identifying the pixels corresponding to the voltage signals different from the standard voltages as target pixels with Mura.
9. The luminance compensation method of a display panel according to claim 8, wherein in calculating a calibration voltage from the voltage signal of the target pixel and an externally transmitted voltage signal of each pixel, the luminance compensation method comprises:
calculating the compensation voltage of the target pixel according to the standard voltage;
and adjusting the voltage signal of the target pixel sent from the outside according to the compensation voltage to obtain the calibration voltage.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113744704A (en) * | 2021-08-23 | 2021-12-03 | 集创北方(珠海)科技有限公司 | Brightness adjusting method and device of display panel |
| CN114842789A (en) * | 2022-06-28 | 2022-08-02 | 京东方艺云(杭州)科技有限公司 | Display device, display information detection and compensation method |
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| CN109147663A (en) * | 2018-11-28 | 2019-01-04 | 南京中电熊猫平板显示科技有限公司 | A kind of organic light-emitting display device and its luminance compensation method |
| CN109742113A (en) * | 2019-01-08 | 2019-05-10 | 京东方科技集团股份有限公司 | A kind of array substrate, preparation method and relevant apparatus |
| CN109903733A (en) * | 2019-04-11 | 2019-06-18 | 京东方科技集团股份有限公司 | Display device and its driving method |
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